Feed-water heater



llNiTnn STATES PATENT @einen PATRCK MCGVERX AND VILLAM E. FRYE, OECRES'lLlNlh OHIO.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 296,427, dated April 8,1884.-.

Application filed October '27, 1883. (No model.)

To @ZZ 'whom t may concern:

'Be it known that We, Partner; MoGrvnnn and WILLIAM E. Fern, both ofCrestline, in the county of Crawford and State of Ohio, have invented anevir and 'improved Feed-Tater Heater, of which the following is a full,clear, and exact description.

Our invention consists of a detachablysupported Water table orheaterlocated in the firebozr of a locomotive or other boiler, withfeed- Water and delivery pipe connections for heat ing the feec'l-n'aterbefore entering the boiler proper, the said heater being supported bythe the pipe-connections and by connection with the side sheets of thefurnace, so as to be readily taken out Vfor repairs; and thepipe-connections haring outside joints back of the fireboX, under theboiler, Where the joints can be connected or disconnected at will; andthe deliverypipes are extended into the boiler and made to discharge atpoints Where currents of VWater are set in motion by the inflowiug jets,

which act lon the fines to protect them from deposits of scale; and theheater is arranged with relation to the air-inlets of the door suitablyfor promoting such combustion of the gasesrising from the firebed aswill prevent the discharge of smoke, all as hereinafter fully described.y

Reference .is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the iigures.

Figure l is a longitudinal sectional elevation of a locomotiveboilerp-rovided with a feedwaterhcater contrived in accordance with ourinvention. Fig. 2 is a transverse section taken on the line a: .t ofFig. l, and Fig. 3 is a plan vieiv -of the water-table forming thefeedwater heater.

A represents the water table orheater, which We arrange in the fire-boi:Z1, as shown in Fig. l--that is, in an inclined positionrising from thebaclr ofthe fire-box, below the tube-sheet, upward toward the frontabout as high as the middle of the fire-door c, but terminatingsufficiently short of it to allow suitable space for the gases to passup in front of the fire-door, to receive sufficient fresh oxygen throughthe air-passages thereof for complete combustion,

or nearly so, the said heater extending nearly from side to side of thelire-box b, and being dctachably secured thereto bythe brackets d,attached to the side sheets, and the clips c, attached to the heater, soas to have suitable support,with freedom to expand and contractindependently of the said side sheets.

At the back and lower edge of the lheater it has three pipe-connections,fg 71, which join With pipes extending through the fire-box b to theextcrionwhere the middle pipe, f, connects with an outside section, fi.,ofthe feed-Water pipe, and the other two pipes, g 7i, join with otheroutside pipes, j j, which enter the boiler, and terminate at L' and Z,respectively, for delivering the feed-water at it from the heater c atthe Water-level, or thereabout, and above the tubes, and so that theWater will dow along the tubes and return to the heater from the pointl, which is much lower, and in the for- .Ward and colder part of theboiler, when the pump or injector is not Working, whereby a circulationwill be established through the heater, and it will be lie-pt full ofWater for its protection and for more effectually heating the Water thanif the heater discharged into the boiler through one pipe only, in whichcase the Water in the heater might be wholly converted into steam, sothat the plates would be injured more by the fire. The current along thetubes from 7s to Z tends to keep the tubes clean. The feed-Water pipeterminates at the opening into the heater, and also the delivery-pipe jthat terminates at Z; butthe other deliverynpipe j extends up therein tothe npper part, as shown at m, to receive the hottest water,which risesthereto and convey it therefrom into the boiler.

. The feed-Water pipe i connects with an in side section, n, by agoose-neck, o, and the section nextendalin this example, to the muddrunip, near Where the checlrvalve ai is located in some forms of engines;but We do not limit ourselves to any particular location of thecheck-valve, nor to the arrangement of the` inside section, a, of thefeed-pipe. The delivery-pipes j j also connect with their insidesections by suitable goose-neck devices, Fig. 2, which may also bevaried at will; but we consider it an essential part of our inventionIOO . the pipes can be readily disconnected at any time for the removalof the heater. These joints g may be constructed in any of the wellknownways for being disconnected, as by' union-joints at s, or otherwise. XVepropose to construct 'the heater a by bending over a boiler-plate in theform represented in crosssection in Fig. l, riveting the ends together,stay-bolting the two wide sides through from one to the other, andriveting iianged plates in the ends, with the flanges turned outward, sothat the joints will not be much exposed to the hot fire and will bevery lasting.

The heater will have plugs in the ends,to be removed for access to cleanthe heater when required.

Having thus described our invention, what we claim as new, and desire tosecure by Letv ters Patent, is-

l. The water-table feed-water heater arranged in the iire-box,andremovably secured to the sides thereof by brackets and clips,

and supported at its lower end by detachable 2. The feed-'water pipeconnected to the water-heater a by an outside section, t', connectingwith an inside section, a, and connecting` with the heater through theiire-box side and with a detachable joint, substantially as described.

3. The delivery-pipes j j, connected to the water-heater a through theire-box side, and by detachable-joints, and having inside eX- tensionsdischarging the water at or about the water-level, and below it, and atopposite ends of the tube-section of the boiler, substantially asdescribed. f

4. In a feed-water heater for locomotiveboilers,located in the lire-box,two deliveringpipes extendingtherefrom into the tube-section of theboiler by outside connections through the fire-box and the bottom of theboiler, one of said pipes extending in the heater to the upper portionof the same and discharging at or about the water-level at the rear endsof the tubes, and the other pipe opening into the lower part of theheater and discharging at a lower point in the boiler, near the frontend of the tubes, to cause circulation of Water in the heater when thepump is n'ot working, substantially as described.

PATRICK MCGIVERN. VILLIAM E. FRYE. Vitnesses: v

DAN Bansr, Jr., W. STAI-ILE.

